This may be due to poor alignment of the cooler tubes with the cooler tube ports on the transmission and/or improper hold down plate alignment.
When installing these tubes, visually verify that each tube is fully inserted into the transmission and are not offset to one side of the cooler port bore before installing the hold down plate.
Torque to 25 Nm
(18 lb-ft). This will provide proper plate to cooler tube alignment and clamping.